Gas-flow-regulating apparatus



July 1, 1930. E. P. s. wiJNscH GAS FLOW REGULATING APPARATUS Filed Dec. 14, 1926 X Wi 2M2;

Patented @171, 1930 UNITED STATES PATENTTOFFICE,

ERICK ZPA'UL GUIDO WfiNSCH, OF SiIEGLI'IZ, NEAR BERLIN, GERMANY, ASSIGNOR TO ASKANIA-WEBKE AKTIENGESEILSCHAFT VORMALS CENTRALWERIKSTATT DESSAU UND CARL BAMBERG-FRIEDENAU, OF IBERIiINf-FBIEDENAU, GERMANY eas-rnow-nneunarme APPARATUS ama filed becember '14, 1926, Serial No. 154,753, and in Germany December, 1925.

Regulating the withdrawal of the gas from retofts' and chamber ovens proceeds generally in this way that the means for drawing off the gas are adjusted accordingly to the outer air pressure. It has also al-' ready been proposed'to regulate the drawing of of the as in such a manner that the pres-' sure in the retort is equal to that in the flues. This later regulation is to be preferred because it prevents combustion gases present in the'flues from entering into the retort and deteriorating the gas, present in the same; reversely, no gas can pass from the retort into the flues.

There arise, however, cases in which the flues themselves are inaccessible so that it is impossible to have a differential pressure regulator influenced by the pressure existing in the flues, and it is, therefore, necessary in such cases to adjust the suction withconsideration of the outer air pressure. The regulator employed for this-purpose is, in

H the'majority of cases, mounted in the suction house which may be located, perhaps, several hundred meters away from the set of ovens. If the suction house has, perhaps, a door on its east side and also a door on its west side, the pressure existing in said house will, for instance in the case of wind blowmg from the west, differ byseveral millimeters water column according to whether the east door or the west door is opened.

These and other influences of the weather are the chief of the causes influencing detrimentally the drawing off of the gas.

Now, the object of the present invention is to provide for a proper regulation also in cases of the just stated kind by doing away with the atmospheric influences, and for this purpose I regulate the suction according to the pressure existingat a place that behaves, as regards influences of the weather, especially wind blowing from the various directions, like the pressures existing in the chambers of the oven. In general, that place will be the tunnel beneath the retorts where the operators regulate the heating of the retorts and constituting, as'it were, a central place located entirely within the set of rctorts.

The withdrawal of the gas is, therefore, so

adjusted, for instance with the aid of a differential pressure regulator, that the pressure existing in the retort is in a certain definite relation to the pressure existing in the tunnel, preferably in such a manner that the two pressures are equal to one another..

This manner of operation is advantageous especially in connection with a device keeping the pressurein the lines constant, in such a manner, that'this pressure is maintained about at atmospheric pressure.-

The invention can be turned into practice by various arrangements and combinations of parts, one of which is'shown diagrammatically and my way of example on the accompanying drawing which is a showing of the apparatus in elevation with parts in section,

on which a denotes a gas retort, 6 denotes a stand pipe through which the gas is drawn away from the retort, 0 denotes a collecting main or the gas, and d denotes another pipe extending forth from said collecting main. The flow of the gas through the gas delivery pipe at can be regulated by a throttle butterfly-valve e. An arm f aflixed to the axle of this valve is connected by a rod 9 with a piston h located in a cylinder 2' communicatv (k and an), and the piston k will be shifted more or less to-one or the other side whereby the throttle valve will be correspondingly turned, i. e. more or less opened or closed.

The tube m is moved in the'one direction by a spring p, and in the other direction by a diaphragmg arranged in a casing r.- One of the two chambers into which said casing is divided by said diaphragm is connected by a tube 8 with the collecting or hydraulic main 0, and the other chamber is connected by a tube t with the tunnel u beneath the retorts where the operators regulate the heatin of the retorts and is subjected to winds on y at the end of the tunnel. The pressure condition in this tunnel will remain constant or essentially constant and independent 5 of atmospheric influences, especially wind blowing from the various directions. The draught is adjusted automatically bythis arrangement and combination of parts in such a manner that the ratio of pressure witha in the retort, or within the collecting main and the tunnel respectively, remains always the same so that the regulation can be efiected accordin to the outer air pressure without being in uenced by wind outside the doors controlling the tunnel entrances, the weather in general, or the like.

The manner of regulation as about described will be used, preferably, in connection with a device maintaining a constant draught in the combustion fiues of the gas retorts. a

I claim:

A gas flow regulating apparatus having in combination a gas retort, a tunnel beneath the retort, a gas collecting main connected to the retort, a gas delivery ipe connected to the collecting main, a gas ow control valve in the gas delivery pipe, a regulating device connected separately to the tunnel and'the 3o collecting main and controlling the flow control valve by the diflerence inpressure in the tunnel and in the collecting main.

In testimony whereof I have aflixed my signature.

ERIGH PAUL GUIDO WllNSCH. 

